GB/T 41933-2022 Active National standards

GB/T 41933-2022 Plastics—Determination of tension-tension fatigue crack propagation—Linear elastic fracture mechanics(LEFM) approach

Publish Date: 2022-12-30 Implement Date: 2023-04-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 41933-2022

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Basic standards and general methods for synthetic resins and plastics

ICS Name: Plastic Composite

Publish Date: 2022-12-30

Implement Date: 2023-04-01

Pages: 22 pages

Scope

This document describes a method for measuring crack propagation by applying a tensile load that periodically changes between a constant positive minimum and a constant positive maximum to a notched specimen.
This document is applicable to the determination of the functional relationship between crack length and the number of load cycles, as well as the functional relationship between the rate of crack length increase and the stress intensity factor and energy release rate at the crack tip.
Note 1: Detect and report possible discontinuities in crack propagation.
This document is also applicable to the determination of a material's resistance to crack growth.
Note 2: The results are expressed as the relationship between the number of load cycles or total time leading to crack growth failure and the stress intensity factor. See Appendix A.
This document is applicable to the determination of tensile fatigue crack propagation using the linear elastic fracture mechanics (LEFM) method for the following materials:
—— Rigid and semi-rigid thermoplastic molding, extrusion materials (including filled and short fiber-reinforced composites) and sheet materials;
—— Rigid and semi-rigid thermosetting materials (including filled and short fiber-reinforced compounds) and sheet materials.
This document is only applicable to materials with very limited viscoelasticity within the applied loading frequency and expected test duration.